NAD-C272-cd-sm 维修电路原理图.pdf

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1、NADSERVICE MANUAL C 272STEREOAMPLIFIERC 272STEREOAMPLIFIERRadioFans.CN 收音机爱 好者资料库 SPECIFICATIONS STEREO MODE CONTINUOUS AVERAGE POWER = 150 W (21.8 dBW) OUTPUT INTO 8 OHMS OR 4 OHMS (Min. power per channel, 20 Hz 20 kHz, both channels driven, with no more than rated distortion) Rated Distortion = 0.

2、03% (THD 20 Hz 20 kHz) Clipping power = 170 W (maximum continuous power per channel). IHF dynamic headroom at 8 ohms = +2.3 dB IHF dynamic power (Maximum short term power per channel) 8 ohms: = 230 W (23.6 dBW) 4 ohms: = 410 W (26.1 dBW) 2 ohms: = 520 W (27.2 dBW) Damping factor 150 (ref. 8 ohms 50H

3、z) Input Impedance R = 20 kohms C = 470 pF Input sensitivity (for rated output into 8 ohms) 1.2 V0.1V Voltage gain 29 dB Frequency response 20 Hz 20 kHz 0.3 dB - 3 dB at 3 Hz/70 kHz Signal / Noise ratio, A-weighted 100 dB ref. 1 W 120 dB ref. rated power BRIDGED （MONOPHONIC）MODE CONTINUOUS AVERAGE P

4、OWER 330 W 25.2 dBW） OUTPUT INTO 8 OHMS (Min. power per channel, with no more than rated distortion) IHF dynamic headroom at 8 ohms 3 dB IHF dynamic power 8 ohms: 800 W (29.0 dBW) IHF dynamic power 4 ohms: 1200 W (30.8 dBW) DIMENSIONS AND WEIGHTS Net Weight 12.5 kg ( 27.5 Ib) Shipping Weight 14.2 kg

5、 ( 31.3 Ib) Dimension (W H D) 435 133 350 mm RadioFans.CN 收音机爱 好者资料库ALIGNMENT PROCEDURE (C272) I. INITIAL ADJUSTMENT (No load connected) A. OUTPUT OFFSET VOLTAGE 1. Connect a DC Millivoltmeter to L Channel TP2 (DC) and TP8 (GND). 2. Turn unit “ON” and adjust VR301 (100ohms) to get a reading of 0V+/-

6、30mV. 3. Connect a DC Millivoltmeter to R Channel TP5 (DC) and TP7, then adjust VR401(100ohms) to get a reading of 0V+/-30mV reading on meter. B. IDLING CURRENT 1. Connect a DC Millivoltmeter to L Channel TP1 (IDL) and TP3 (IDL), then adjust VR302 (500 ohms) for 67.5mV reading on meter. 2. Connect a

7、 DC Millivoltmeter to R Channel TP4 (IDL) and TP6 (IDL), then adjust VR402 (500 ohms) for 67.5mV reading on meter. II. ISC ADJUSTMENT (WITH LOAD CONNECTED) 1. Connect a DC Millivoltmeter to Power Board CB725, and connect 4 ohms load to both L&R speaker output terminals. Then feed 20kHz signal to Fix

8、ed In RCA. 2. Turn unit ”ON” and try to get 15W on speaker output terminal. Then adjust VR701 (82kohms) to get a reading of 0V+/-10mV. 3. Change the load to 8 ohms and try to get 160W on speaker output terminals. Then adjust VR701 (82kohms) to get a reading of 1.4V+/-30mV. III. FINAL ADJUSTMENT Repe

9、at procedure A and B for offset voltage and idling current alignment respectively. DRAFTC70222n/250VC70322n/250VC715C716Q703C1815Q702A1015TC701TIC116DTC702TIC116DR7071KR71322KR709100R7111KR7121KR7081KR710100R71422KR7160.025/3W 10%R717100MF 1%Q706A1015Q707A1015R7189K1MF 1%R719220K!REDGRYBLKORGVIO!H1H

10、2L1L252.1V AC10%10%33.1V ACC70422n/100VC70522n/250V!10%10%32.5V ACC71122n/250VC71222n/250VR701R702R703R704C72122n/100VC72222n/100VC7231000u/100VC7241000u/100VR7211KR722 1KR72333/FSR7261KR7251KR7271KR730 1KR7281KR7353K31%MFR7321KR7311K8R7349K11%MFR72433/FSR7331KR73722K 1%MFC728100u/25VC73210u/100VC73

11、34u7/100VC729100u/25VC73722u/100VC73422n100VC73147PC73047PC73522n 100VQ708KSC2690Q710C1775Q711C1775Q709KSA1220Q712A872D7031N4148D7041N4148D7061N4148D7051N4148C72547u100VC72647u/100VR736 22K 1%MFC73622u/100V!60.5V ACT701: TI-65381: AC 230VACS1ACS2+-B703DB104ACS1ACS2+-B704DB104ACS1ACS2+-B701KBU1004ACS

12、1ACS2+-B702KBU1004C71322n/250VC71422n/250VD7021N540110A10A0.5A0.5AQ704A1015Q705C1815R71522KC717C718C719N.I.C720N.I.123478956101112T701MAIN TRANSFORMER12345CZ7025PIN12345CB7025PIN12345CZ7015PIN12345CB7015PINR720100R729100C7270.1uFUSEABLE : 4 X 1/1WAC-DETISC-CISC-S4X10000uF/80V +20%/-20%C715-C718+18VR

13、742249R743249R7403K32R7413K32C74422u/50VC74522u/50VC74622n100VC74722n100VINIC702LM317MINIC703LM337MC74022n100VC74122n100V+18V-18VC7382200uF/50VC7392200uF/50VC74210u/50VC74310u/50VD7071N4148D7081N414812CB7032PINC7060.1u!ACS1ACS2+-B705DB104C7081000u/16VC7070.1uR70610K1456791028T702STANDBY TRANSFORMERP

14、J701+12V TRIGR7052K2Q701C1815123SW702AAUTO TRIG12RL701ASTAND-BYRL701B5VD7011N4148INIC7017805C7100.1uC70910uFTGND1234CZ7064PIN1234CZ706A4PIN12CZ7032PINF701T4AL/250V(CE)R738200/1W FSR739200/1W FSR740-R743=1% MFYELBLUWHIBLUYEL12CZ7042PIN+T5V+T5VTGNDR74910KD7101N4148R758100K 1% MFR75991K1% MFR75762K1% M

15、FR756390K1% MFC75310u/25VR7541KC75010u/25VR7551KC75110u/25VIC704ATL082CPC75210u/25VR7511MIC704BTL082CPR74527K MFR7521MC7481u/50VC7491u/50VR75010KD7111N4148R746270K 1% MFD7121N4148R748100KR753100K1% MF-18VD7091N4148-18V+18VISC-SISC-CR77256KR77356KC758330u/16VC7564u7/100VC757220n/63VR76410KR76956KC755

16、47u/50V12345678IC705uPC1237HA+V34R77122KR77022KD7191N4148D71810VQ715A1015C75410u/50VR76222KR76310KR76510KR76810KD7131N4148RL702B36VR766220/2W FPL-OUTR-OUTR7675K6+V34PROTECT-IPT-OUTAC-DET+5V12CB7072PIN12CB7082PINLAG1G2RALBG3G4RBCB715BINDING POSTS12RL702ARL-LCH12RL703ARL-RCH12345678CZ709A8PIN12345678C

17、Z710A8PINC75922n100VC76022n100VC7612n2C7622n2L-OUTR-OUT+64V-64V123SW704ABG-SIGNALPROTECT-I123SW703ASOFTCLIP101112SW704DBRIDGE123CZ7113PIN+18VR779 10KR77710KR7744K7D722 1N4148D7211N4148D7201N4148R775560R778 4K7R7760Q716C1815Q717C1815123CZ7123PIN+18V+18VPT-OUT456SW702BAUTO TRIG+5VQ714C1815Q713C1815R76

18、122KR76022KPROTECT-TPROTECT-TISC-CR783 25KR782 25KR785 1KR784 1KR7811KR7801K+68V-68VC76410u/25VC76310u/25VD71424VD71524V456SW703BSOFTCLIP+64V-64V+18V+68V-68VR744100Q718C1815R78622KD7161N4148+18V-18VC270 STANDBY BOARDLOUTGND+64V-64V-64V+64VGNDROUTMUTE-LMUTE-RPOS90POS90POS80POS80SC-PSC-PSC-NSC-NOVERI-

19、SOVERI-S-68V-68V+68V+68VBG-OBG-S12CZ714A2PINBG-G456SW704BBG-GND12CZ713A2PINLINGND123456789CZ619PINR6121KC62100PR62220 MFR642.2MMFQ622SK369R681K MFR610100/MFQ652SA970AQ682SD667AQ662SB647AD631N4148D641N4148C6439PR62010/MFC680.1uC670.1uMGND123456789CB619PINMLO+18VLOUTLIN-LIN+GNDRIN+RIN-ROUT-18VR61847/M

20、FR6160R61410KMGND+18M-18MMGNDMLOMROR621N.I.C611N.I.MR-FBC270-INPUT BUFFERR66N.I.1% MFC61047PR6111KC61100PR61220 MFR632.2MMFQ612SK369R671K MFR69100/MFQ632SA970AQ672SD667AQ642SB647AD611N4148D621N4148C6339PR619 10/MFC660.1uC650.1uMGNDMROR61747/MFR6150R61310KMGND+18MR65N.I.1% MFC6947PMR-FB-18MML-FBML-FB

21、-18MRINGND2SA1943BCE2SA19432SA8722SA10152SC1815A872E C BB649TL431LM317:R A KE C BTL4312SB6492SD6693:INLM337:1:ADJUST,2:IN,1 2 3LM7805LM7805 1:IN2:GND,3:OUT2SC5200R101220 MFC101100PR1022M2RCA1AFIXED-LR201220 MFC201100PR2022M2RCA1BFIXED-R123SW705AF/V SW456SW705BF/V SWR103220 MFC102100PR1042M2RCA2AVARI

22、-LR203220 MFC202100PR2042M2RCA2BVARI-RA1RV1A1KA2RV1B1KR1050R2050C10310n63VC20310n63VC104100uFC204100uF123CZ301A3PIN123CZ401A3PIN+18V-18VC10510uFC20510uF789SW705CF/V SW101112SW705DF/V SWBUF-RBUF-R1 2 3LM317LM3371:ADJUST,2:OUT,3:OUT2.5Vref+-Reference(R)Cathode (K)Anode (A)123KSC2690TL431B647E C B2SB64

23、7A2SD667AC6130.22uC6120.22uC76522u/50VR50R60C5N.I.C6N.I.P15 LOUTP16 SGNDP7-64VP9PGNDP11 +64VP13 LOUT+64V-64VP17 ROUTP18 SGNDP8-64VP10 PGNDP12 +64VP14 ROUTC7664n7/400VGNDK A GTIC116DTIC116D2SA970GNDGNDC76710u/25VD7231N4148R788100K1% MFR-OUTL-OUTD7241N4148R789270K 1% MFRL703B36VR7902K2+18V!R791100KR79

24、22KR793560C40722P/500VC402220PC40522P/500VC4150.1uR40222KR403100 MFR412100R404100R41339KR40539KR414 100R406 100 Q4132SB649AQ4102SB649AQ4092SA1015Q4052SA1015Q4072SA872Q4062SA872Q4012SA872Q4112SD669AQ4122SC1815Q4082SC1815Q4042SC1775Q4032SC1775Q4022SC1775R40833R42033R41847K1%MFR459 10/1W FSR4603R3/1W F

25、PR4151KR423100 MF 1%R4211K MF 1%R417150 1%R41910K0.5W 1%MFR42739KR407910 MF 1%R41610KR428100 MFR4111KR41010KR426100KR424100KR409100 MF 1%D4031N4148D4041N4148D4061N4148D4051N4148C408100PQ4142SD669AR4303R31W FPR4325101W FPR4342K23W FPR4383R31W FPR4415101W FPR4442K23W FPR437 1001W FSR429 1001W FSR4314R

26、7 FSR4394R7 FSR43633R44033L401 10uHL402 10uHR4451K2R446820Q415KSC2690Q4172SC4937Q4222SC5200Q4202SC5200Q4182SA1837R4500.21W FSR4520.21W FSR4510.21W FSR4530.21W FSR4570.055WR4560.055WR448751W FPR449751W FPR44210KR43310KC413470P500VC414470P500VQ4192SA1943Q4212SA1943D408BAV21D407BAV21C4180.1u100VL403 1u

27、HR401470/MFR-FDBKC40110uFC40310uF/25VC40410uF/25VC4062200u/6.3VC411100uFC412100u/25VR435 10KR44310KC4160.1u100VC4170.1u100VC4090.1u100VC4100.1u100VQ4262SA1015Q425C1815R4646K8C42110u50VR46322KR4611KR46215KC42022n100VD4091N4148R46522KR4540.21W FSQ4232SA1943Q4242SC5200R4550.21W FSR422 9K10.5W 1%MF12CZ4

28、012PIN1VR401180R466t=90 CR467t=80 CRSCNR-FDBKD40218VD40118VIC402TL431IC401TL4311VR402500R447220Q416A1015TP4IDLING-ITP5OFFSETTP6IDLING-IR4680.21W FSQ4272SA1943Q4282SC5200R4690.21W FS-V64R+V64R12CZ7082PIN12345678CZ7108PIN-64V+64VGNDROUTMUTE-RPOS90POS80SC-PSC-NOVERI-S-68V+68VGNDBG-SRSCNRSCPR-MUQ4292SC1

29、775Q4302SA872-V68R+V68RR425 100R470 100RSCP+V68R-V68R+V64R-V64RR471 2K2R-MUR4728K2R358100/0.5W MF123CZ7143PINBG-GBG-GBG-SBG-SBG-GC30722P/500VC302220PC30522P/500VC3150.1uR30222KR303100 MFR312100R304100R31339KR30539KR314 100R306 100 Q3132SB649AQ3102SB649AQ3092SA1015Q3052SA1015Q3072SA872Q3062SA872Q3012

30、SA872Q3112SD669AQ3122SC1815Q3082SC1815Q3042SC1775Q3032SC1775Q3022SC1775R30833R32033R31847K 1%MFR359 10/1W FSR360 3R3/1W FPR3151KR323100 MF 1%R3211K MF 1%R317150 1%R31910K 0.5W 1%MFR32739KR307910 MF 1%R31610KR328100 MFR3111KR31010KR326100KR324100KR309100 MF 1%D3031N4148D3041N4148D3061N4148D3051N4148C

31、308100PQ3142SD669AR3303R31W FPR3325101W FPR3342K23W FPR3383R31W FPR3415101W FPR3442K23W FPR337 1001W FSR3291001W FSR3314R7/FSR3394R7/FSR33633R34033L301 10uHL302 10uHR3451K2R346820Q315KSC2690Q3172SC4793Q3222SC5200Q3202SC5200Q3182SA1837R3500.21W FSR3520.21W FSR3510.21W FSR3530.21W FSR3570.055WR3560.05

32、5WR348751W FPR349751W FPR34210KR33310KC313470P500VC314470P500VQ3192SA1943Q3212SA1943D308BAV21D307BAV21C3180.1u100VL303 1uHR301470/MFL-FDBKC30110uFC30310UF/25VC30410uF/25VC3062200u/6.3VC311100uFC312100u/25VR335 10KR34310KC3160.1u100VC3170.1u100VC3090.1u100VC3100.1u100VQ3262SA1015Q325C1815R3646K8C3211

33、0u50VR36322KR3611KR36215KC32022n100VD3091N4148R36522KR3540.21W FSQ3232SA1943Q3242SC5200R3550.21W FSR4588K2R322 9K10.5W 1%MF12CZ3012PIN1VR301180R366t=90 CR367t=80 CLSCNL-FDBKD30218VD30118VIC302TL431IC301TL4311VR302500R347220Q316A1015TP1IDLING-ITP2OFFSETTP3IDLING-IR3680.21W FSQ3272SA1943Q3282SC5200R36

34、90.21W FS-V64L+V64L12CZ7072PIN12345678CZ7098PIN-64V+64VLOUTMUTE-LPOS90POS80SC-PSC-NOVERI-S-68V+68VBG-OLSCNLSCPL-MUQ3292SC1775Q3302SA872-V68L+V68LR325100R370100LSCP+V68L-V68L+V64L-V64LR3712K2L-MU12CZ7132PINGNDGNDC32210u/100VC31910u/100VC42210u/100VC41910u/100VTP8GNDTP7GNDC3230.1u100VC4230.1u100VQ431C

35、28781%1%R79710KB-B-12CB716M-TEST12CB717M+TEST1VR70182KR-OUTL-OUT12CZ7182PIN12CZ7192PIN12CB7192PIN12CB7182PIN123CB72068VTEST+68V-68V123CB72318VTEST+18V-18VT6.3AL/250V(AH)123CB724N/ATGND12CB725PTEST789SW704CBRIDGE12CZ7052PINGNDROUT12CB7052PINR747470K-18VNOTE:1. RESISTORS ARE CARBON FILM 1/4W 5% UNLESS

36、 SPECIFIED. FP - FLAME PROOF 5%. FS-FUSIBLE 5% MF - METAL FILM 5%. CE-CERAMIC CASE 5% 2. ALL CAPACITORS, UNLESS OTHERWISE SPECIFIED, ARE 50V, 20%3. COMPONENTS WITH N.I. MEANS NOT INSERT.4. COMPONENTS WITH * ARE ADJUSTABLE PARTS.5. COMPONENTS WITH ARE SAFETY CRITICAL PARTS.!12345CZ705230V120VC272NAD

37、ELECTRONICS INTERNATIONALDocumentSheet:Date:Date:Date:DraftedPL CheckedApprovedby:by:by:Number:REV.DateECN No.DESCRIPTIONAPPRO.Project:State:PTA Checkedby:Date:HS4_C272_B007 V3.0-MAIN.schTRIG OFFR7992.2KCHANGE R744 TO 100 ADD R799 1/4W 2K DRAFTCIN11COUT9COUT10RST12Q47Q55Q64Q76Q814Q913Q1015Q121Q132Q1

38、43VCC16GND8U801CD4060CLK11D12SD10CD13Q9Q8U803B74HC74CLK3D2SD4CD1Q5Q6714U803A74HC7489U802D74HC141011U802E74HC1412714U802A74HC1434U802B74HC1456U802C74HC141213U802F74HC14R80210KQ8012SC1815R80310KR80410KR810100KR814200KR8012MR80510KR80610KR80710KR8131MR811100KR80810KR80910KR81610KR81510KR81710KR81910KR8

39、1810KQ8022SC1815Q8032SC1815C8030.1uFC8072.2uFC8060.1uFD8011N4148R8121MC8020.1uF+5V+5V+5V+5V+5V+5VC8010.1uFC8050.1uFC8040.1uF123456CZ8046PIN123CZ8013PIN+5V1234CZ8024PIN1234CZ8034PIN+5VOUTPUTIN SENSETRIG IN312Q8042SA1015HS4_C272_B007 V4.0-ATO.SCHC272R9011MR9021MR91010KR90730MR90910KR9111MC90610pFC9041

40、00nFC9090.1uF12D9031N414812D9041N414812D9051N414812D9061N414812D9011N414812D9071N414812D9111N4148+5V+5V+5VC901100nFC903100nFC905100nFC902100nFR90830MC90710pF12D9081N414812D9091N414812D9101N414812D9121N414812D9021N414812D9131N4148R906100KR903100KR905100KR904100K32184U901ALF353567U901BLF35312C908100nF

41、123CZ9013PIN123CZ9023PINS_LCHS_RCH123CZ9033PIN134256S901Q9012SC1815GRR913100kR912100k+5V12C910100n1233PIN1233PIN1234566PINR11010R110247LED1106LED1105R11051KR11041KSCBG+18VAGNDLED1104LED1103LED1102Q11032SA1015Q11022SA1015Q11012SA1015R1103510TS1101GND+5VTSLED_SENSELED_TRIGLED_TSGREENGREENGREENGREENAMB

42、ERGREEN/AMBER/REDINSENSE BORADATO BORADTACT SWITCH&LED BORADLED1101PWRTO MAIN BOARD CZ712TO MAIN BOARD CZ711TO STANDBY BOARD CZ706 TO MAIN BOARD CZ706A 123CB9013PIN123CB9023PINTO MAIN BOARD CZ61 PIN4TO MAIN BOARD CZ61 PIN6123CB9033PIN123CB903A3PINP1001AC INLET12CZ10012PIN12C10014.7nF1000V12CB10012PI

43、N123CB1101A3PIN123CB1102A3PIN12CB1001A2PIN1234CB8024PIN1234CB8034PIN123456CB8046PIN1234CB803A4PIN1234CB802A4PINTO STANDBY BOARD CZ704AC INPUT BOARDTO STANDBY BOARD CZ705123CZ10022PIN123CB10022PIN12C912220uF/16VR91410K12C911220uF/16VADD R914,C808,C911,C91212C808220uF/16V123CZ10032PIN123CB10032PIN1234

44、5CB7055PINS1001ROCK SWITCH123CB10022PIN12345CB7055PIN(AH VER.)(C VER.)TO MAIN BOARD CZ61 PIN5TO MAIN BOARD CZ61 PIN5PN U1 CHANGED TO U801NAD ELECTRONICS INTERNATIONALDocumentSheet:Date:Date:Date:DraftedPL CheckedApprovedby:by:by:Number:REV.DateECN No.DESCRIPTIONAPPRO.Project:State:PTA Checkedby:Date

45、:C8090.1uF100VADD 0.1uF CAP FROM TRIG IN TO GNDR819 CHANGED TO 10KC022V1-01303-12-10V3.7WIRING DIAGRAMF001F002F003F004F005F006F007F008F009C001C002C003C004C005C006C007R002R003R001C008C016C010C009C011C012C015C014C013C017C018R006R004C020C021C022C019C023C024C025C026C027C028C029C030C031C032C033C034C035C0

46、36C037C038C039T001C041S001S002S001S001S001S001S001S001S003S003S004S005S006S007S008S009S009S010S011C040S012S014S014S013S015S014S013S015S005S005S001S005S001S002S001S002S005R005EXPLODED VIEWREF.NO PART NO.DESCRIPTIONQty.REF.NOPART NO.DESCRIPTIONQty.C00166-026002-1Chassis1F00167-026001-0Fascia1C00266-00

47、5004-0Base Cover1F00267-018001-0End Cap L1C00375-010004-1Foot4F00367-018002-0End Cap R1C00478-001002-0Foot Pad4F00476-003001-0LED Lens6C00566-005006-0BDP Support1F00577-026002-0Power Button Bezel1C00669-006003-0Copper Slot1F00677-026001-0Power Button1C00766-006001-0Bus Bar2F00775-005001-0Sleeve5C008

48、70-002004-0Module Support 21F00816-27209-00LED&Ttact Switch Board 1C00975-003004-0Module Lid1F00966-026001-0Subfascia1C01073-003001-0Rotate Knob1C01169-002004-0BDP Pin 4C01269-005006-0BDP Pin 4R00167-026003-0Rear Panel (AH)1C01311-05202-01Slide Swich267-026002-0Rear Panel (C)1C01411-05202-00Slide Sw

49、ich2R00216-27205-00Insense Board1C01517-07001-00Trigger In Socket1R00311-05202-00Slide Switch1C01617-01002-01RCA2R00466-010010-0L Type Bracket2C01716-27010-00Main PCB1R00517-07102-00AC Inlet1C018Binding Post8R00616-27207-00AC Input Board1C01970-005005-0Heat Sink2R00711-01101-02Rock Swich1C02070-0260

50、04-1Heat Sink 2b2C02170-026005-1Heat Sink 1a1C02270-026002-1Heat Sink 22T00167-018004-0Top Cover1C02370-026001-1Heat Sink 1b2C02470-026003-1Heat Sink 2a1C02585-005001-0PC Spacer8S00161-023106-0Self Taping Screw STB3x650C02616-27020-00Amplifier PCB2S00261-023108-0Self Taping Screw STB3x822C02716-2704